<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<title>狗狗聊天室</title>
</head>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script>
<script>
	var socket;
	function openSocket() {
		if(typeof(WebSocket) == "undefined") {
			console.log("您的浏览器不支持WebSocket");
		}else{
			console.log("您的浏览器支持WebSocket");
			//实现化WebSocket对象，指定要连接的服务器地址与端口  建立连接
			//等同于socket = new WebSocket("ws://localhost:8888/xxxx/im/25");
			//var socketUrl="${request.contextPath}/im/"+$("#userId").val();
			// var socketUrl="http://192.168.1.41:80/imserver/"+$("#userId").val();
			var socketUrl="http://localhost:80/imserver/"+$("#userId").val();
			socketUrl=socketUrl.replace("https","ws").replace("http","ws");
			console.log(socketUrl);
			if(socket!=null){
				socket.close();
				socket=null;
			}
			socket = new WebSocket(socketUrl);
			//打开事件
			socket.onopen = function() {
				console.log("websocket已打开");
				//socket.send("这是来自客户端的消息" + location.href + new Date());
			};
			//获得消息事件
			socket.onmessage = function(msg) {
				console.log(msg.data);
				//发现消息进入    开始处理前端触发逻辑
			};
			//关闭事件
			socket.onclose = function() {
				console.log("websocket已关闭");
			};
			//发生了错误事件
			socket.onerror = function() {
				console.log("websocket发生了错误");
			}
		}
	}
	function sendMessage() {
		if(typeof(WebSocket) == "undefined") {
			console.log("您的浏览器不支持WebSocket");
		}else {
			console.log("您的浏览器支持WebSocket");
			console.log('{"toUserId":"'+$("#toUserId").val()+'","contentText":"'+$("#contentText").val()+'"}');
			socket.send('{"toUserId":"'+$("#toUserId").val()+'","contentText":"'+$("#contentText").val()+'"}');
		}
	}
</script>
<body>
<p>【userId】：<div><input id="userId" name="userId" type="text" value="10"></div>
<p>【toUserId】：<div><input id="toUserId" name="toUserId" type="text" value="20"></div>
<p>【toUserId】：<div><input id="contentText" name="contentText" type="text" value="hello websocket"></div>
<p>【操作】：<div><a onclick="openSocket()">开启socket</a></div>
<p>【操作】：<div><a onclick="sendMessage()">发送消息</a></div>
</body>

</html>
